97870-30-9Relevant academic research and scientific papers
Access to Amidines and Arylbenzimidazoles: Zinc-Promoted Rearrangement of Oxime Acetates
Zhu, Zhongzhi,Cen, Jinghe,Tang, Xiaodong,Li, Jianxiao,Wu, Wanqing,Jiang, Huanfeng
, p. 2020 - 2031 (2018/04/09)
An efficient and straightforward zinc-promoted rearrangement of oxime acetates with arylamines for the synthesis of amidines has been developed under mild conditions. This process involves N?O/C?C bond cleavages and C?C/C?N bond formations. Various oxime
An easy one-step photocatalytic synthesis of 1-aryl-2-alkylbenzimidazoles by platinum loaded TiO2 nanoparticles under UV and solar light
Selvam,Swaminathan
, p. 3386 - 3392 (2011/06/28)
One-pot synthesis of disubstituted benzimidazoles from N-substituted 2-nitroanilines or 1,2-diamines with 3-12 nm-sized platinum particles loaded on the TiO2 using solar and UV-A light is described. 1-Aryl-2-alkylbenzimidazoles from 2-nitrodiphenylamines are formed by combined redox photocatalytic reaction, condensation and catalytic dehydrogenation on Pt-TiO2. In case of diamines, this reaction is proceeded by Pt-TiO2 assisted photocatalytic oxidation of an alcohol and a catalytic dehydrogenation of the intermediate on the surface of platinum nanoparticles. In both cases product formation was achieved by tandem photocatalytic and catalytic reactions on Pt-TiO2.
A mild and expedient one-pot synthesis of substituted benzimidazoles in water using a phase-transfer catalyst
Chakrabarty, Manas,Karmakar, Sulakshana,Mukherjee, Ratna,Arima, Shiho,Harigaya, Yoshihiro
experimental part, p. 375 - 380 (2010/05/01)
1-Alkyl/phenyl-2-arylbenzimidazoles have been synthesized in very good to excellent yields by a one-pot condensation of N-alkyl/phenyl-o-phenylenediamines with aryl aldehydes in water at room temperature using cetylpyridinium bromide as a cheap and eco-friendly catalyst.
RUTHENIUM-CATALYSED REARRANGENMENTS OF AZOBENZENES II. THE PREPARATION OF 1-PHENYLBENZINIDAZOLES FROM AZOBENZENE DERIVATIVES AND PRIMARY ALCOHOLS CATALYSED BY RUTHENIUM COMPLEXES
Spencer, Alwyn
, p. 79 - 90 (2007/10/02)
RuCl3*3H2O in presence of PPh3 and a catalytic amount of a base and under an atmosphere of carbon monoxide catalyses the reaction of azobenzene derivatives and primary alcohols or their esters to give 2-substituted 1-phenylimidazoles.Substituents in the azobenzene derivatives have a marked effect on the product yields.Where isomer formation can occur, all possible isomers of the product are usually formed.In non-symmetrically substituted azobenzene derivatives, ortho-metallation occurs preferentially in the aromatic ring having the highest electron density.
